Spring for Apache Kafka 2.3 is now available

Option to use a producer per thread, to avoid blocking other threads when flushing.

The AggregatingReplyingKafkaTemplate extension to the ReplyingKafkaTemplate is provided to aggregate replies from multiple consumers.

You can now add a RecordInterceptor to modify the record before the listener is invoked.

ConsumerSeekAware now supports relative seeks.

You can now specify a delay between processing the results of the previous poll() and issuing the next poll().

When using manual AckMode s, you can now negatively acknowledge a record and the container will perform the necessary seeks to replay the record.

Micrometer Timer s are now supported to monitor listener performance.

The SeekToCurrentErrorHandler can be configured to treat certain exceptions as fatal, disabling retry; you can also now add a BackOff between redelivery attempts for failed deliveries.

The RetryingDeserializer is provided to retry serialization in the event of, say, a network glitch accessing a schema registry.

The RecoveringDeserializationExceptionHandler is now provided for handling deserialization exceptions.

The HeaderEnricherTransformer is provided to add headers within a stream topology definition.

The MessagingTransformer is provided to allow invocation of a Spring Integration flow from within a stream definition.

Delegating serializer and deserializer implementations are provided to allow sending/receiving records containing different types.